The maintenance-free 3M ™ 4251 half-mask is easy to use and has built-in filters unlike the simple masks. Its functionality does not end after the first use and is easily reusable.
The valve has been improved to reduce breathing resistance and the new facepiece,
not silicone, it is soft and hypoallergenic. Like the previous one, it has a resealable bag that can be used as a hygienic case and for transport.
The 4251 half mask is suitable for protection from many gases , organic vapors (with a boiling point above 65 ° C) and dangerous combinations of fine powders (up to 10 x TLV),
The 3M ™ 4251 Mask is a ready-to-use , which does not require any type of maintenance.
It is part of the 3M ™ reusable semi-mask respirators of the 4000 series, designed to offer effective and comfortable protection from the joint presence of numerous dangerous gases, vapors and dusts.
Mask Protection Factor 3M ™ 4521
The 3M ™ 4251ha mask FFA1P2 RD Protection Factor and protects against organic vapors (good warning properties and boiling point> 65 ° C)
up to 10 times the TLV ( Threshold Limit Value ) or 1000 ppm , considering the lower value between the two, and 10 times the TLV for the powders .